Spring/ Summer wardrobe for 10 year old

So as it says I need to buy spring/ summer clothes for my 10 year old. I'm kind of on a budget because we all need stuff for warmer weather, I'm a rubbish shopper and she doesn't really care what she wears.Last summer she had t shirts and denim shirts and a couple of dresses. This year her pals are definitely more into clothes. Not that it totally matters.Any tips from the experts?